US9130611B2ActiveUtilityA1
Method of using zoning map for beam searching, tracking and refinement
Est. expiryAug 17, 2032(~6.1 yrs left)· nominal 20-yr term from priority
Inventors:Zhanfeng Jia
H04B 7/06952H01Q 21/061H01Q 3/30H01Q 1/007H04B 7/0686H04B 7/0617H04B 7/0408H04B 7/0695
62
PatentIndex Score
1
Cited by
10
References
35
Claims
Abstract
The disclosure is directed to a wireless communications device. In an embodiment, the wireless communications device comprises a phased antenna array comprising a plurality of antennas, a transceiver operatively coupled to the phased antenna array and configured to control the plurality of antennas and an antenna weight vector (AWV), a memory storing a spherical zoning map, and a beam controller configured to control the transceiver by setting the AWV for each antenna of the plurality of antennas.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. A wireless communications device, comprising:
a phased antenna array comprising a plurality of antennas;
a transceiver operatively coupled to the phased antenna array and configured to control the plurality of antennas and an antenna weight vector (AWV);
a memory storing a spherical zoning map; and
a beam controller configured to control the transceiver by setting the AWV for each antenna of the plurality of antennas.
2. The wireless communications device of claim 1 , wherein the beam controller is further configured to determine the AWV for a plurality of beams.
3. The wireless communications device of claim 2 , wherein the beam controller determines the AWV for the plurality of beams by:
determining a total number of beams to correspond to a total number of zones;
setting a beam number based on a zone number; and
calculating an AWV based on the zone number, wherein the AWV is defined by a canonical weight function of the zone number.
4. The wireless communications device of claim 1 , wherein the beam controller is further configured to:
determine that a coordinate system alignment of the phased antenna array is different than a coordinate system alignment of a receiver device; and
compensate for the difference in coordinate system alignment by rotating zone numbers of the spherical zoning map.
5. The wireless communications device of claim 1 , wherein a canonical weight function for a zone (b x , b y ) Bx×By is:
w
m
x
,
m
y
(
b
x
,
b
y
)
=
ⅇ
-
j
2
π
R
·
round
(
R
·
m
x
·
(
b
x
+
B
x
/
2
)
mod
(
B
x
)
B
x
+
R
·
m
y
·
(
b
y
+
B
y
/
2
)
mod
(
B
y
)
B
y
)
where b x represents a zone number along an x-axis, b y represents a zone number along a y-axis, B x represents a total number of zones along the x-axis, B y represents a total number of zones along the y-axis, m x represents a beam along the x-axis, m y represents a beam along the y-axis, and R is the radius of a beam.
6. The wireless communications device of claim 1 , wherein the spherical zoning map comprises a two-dimensional representation of a unit sphere, where an x-axis and a y-axis of the unit sphere are divided into a set of numbered, non-overlapping zones.
7. The wireless communications device of claim 1 , wherein a zoning configuration of a total number of zones is a one-dimensional or two-dimensional array.
8. The wireless communications device of claim 7 , wherein the zoning configuration of the total number of zones is one of 4×1, 4×4, 8×1, or 8×8.
9. The wireless communication device of claim 1 , wherein a zoning configuration of a total number of zones is a hexagonally-shaped two-dimensional array.
10. The wireless communications device of claim 1 , wherein the beam controller is further configured to:
conduct a sector sweep using a total number of beams corresponding to a total number of zones.
11. The wireless communications device of claim 1 , wherein the beam controller is further configured to:
detect a misalignment based on a loss of gain; and
search a plurality of neighbor beams to detect an improved alignment.
12. The wireless communications device of claim 1 , wherein the zoning map is a first zoning map, the wireless communications device further comprising:
a second zoning map stored in the memory; and
a second plurality of beams.
13. The wireless communications device of claim 12 , wherein a total number of zones of the second zoning map is greater than a total number of zones of the first zoning map.
14. The wireless communications device of claim 12 , wherein the beam controller is further configured to:
set the AWV based on the second zoning map.
15. The wireless communications device of claim 12 , wherein the second plurality of beams are configured for beam refinement.
16. The wireless communications device of claim 1 , wherein the phased antenna array is a 60Ghz phased antenna array.
17. A method of wireless communication, comprising:
determining an antenna weight vector (AWV);
storing a spherical zoning map in a memory;
controlling a plurality of antennas of a phased antenna array; and
controlling, by a beam controller, a transceiver operatively coupled to the phased antenna array by setting the AWV for each antenna of the plurality of antennas.
18. The method of claim 17 , further comprising:
determining, by the beam controller, the AWV for a plurality of beams.
19. The method of claim 18 , wherein the determining the AWV for the plurality of beams comprises:
determining a total number of beams to correspond to a total number of zones;
setting a beam number based on a zone number; and
calculating an AWV based on the zone number, wherein the AWV is defined by a canonical weight function of the zone number.
20. The method of claim 17 , further comprising:
determining, by the beam controller, that a coordinate system alignment of the phased antenna array is different than a coordinate system alignment of a receiver device; and
compensating, by the beam controller, for the difference in coordinate system alignment by rotating zone numbers of the spherical zoning map.
21. The method of claim 17 , wherein a canonical weight function for a zone (b x , b y ) Bx×By is:
w
m
x
,
m
y
(
b
x
,
b
y
)
=
ⅇ
-
j
2
π
R
·
round
(
R
·
m
x
·
(
b
x
+
B
x
/
2
)
mod
(
B
x
)
B
x
+
R
·
m
y
·
(
b
y
+
B
y
/
2
)
mod
(
B
y
)
B
y
)
where b x represents a zone number along an x-axis, b y represents a zone number along a y-axis, B x represents a total number of zones along the x-axis, B y represents a total number of zones along the y-axis, m x represents a beam along the x-axis, m y represents a beam along the y-axis, and R is the radius of a beam.
22. The method of claim 17 , wherein the spherical zoning map comprises a two-dimensional representation of a unit sphere, where an x-axis and a y-axis of the unit sphere are divided into a set of numbered, non-overlapping zones.
23. The method of claim 17 , wherein a zoning configuration of a total number of zones is a one-dimensional or two-dimensional array.
24. The method of claim 23 , wherein the zoning configuration of the total number of zones is one of 4×1, 4×4, 8×1, or 8×8.
25. The method of claim 17 , wherein a zoning configuration of a total number of zones is a hexagonally-shaped two-dimensional array.
26. The method of claim 17 , further comprising:
conducting, by the beam controller, a sector sweep using a total number of beams corresponding to a total number of zones.
27. The method of claim 17 , further comprising:
detecting, by the beam controller, a misalignment based on a loss of gain; and
searching, by the beam controller, a plurality of neighbor beams to detect an improved alignment.
28. The method of claim 17 , wherein the zoning map is a first zoning map, the method further comprising:
storing a second zoning map in the memory; and
establishing a second plurality of beams.
29. The method of claim 28 , wherein a total number of zones of the second zoning map is greater than a total number of zones of the first zoning map.
30. The method of claim 28 , further comprising:
setting, by the beam controller, the AWV based on the second zoning map.
31. The method of claim 28 , wherein the second plurality of beams are configured for beam refinement.
32. The method of claim 17 , wherein the phased antenna array is a 60 Ghz phased antenna array.
33. A wireless communications device, comprising:
logic configured to determine an antenna weight vector (AWV);
logic configured to storing a spherical zoning map in a memory;
logic configured to control a plurality of antennas of a phased antenna array; and
logic configured to control, by a beam controller, a transceiver operatively coupled to the phased antenna array by setting the AWV for each antenna of the plurality of antennas.
34. A wireless communications device, comprising:
means for determining an antenna weight vector (AWV);
means for storing a spherical zoning map in a memory;
means for controlling a plurality of antennas of a phased antenna array; and
means for controlling, by a beam controller, a transceiver operatively coupled to the phased antenna array by setting the AWV for each antenna of the plurality of antennas.
35. A non-transitory computer-readable medium for wireless communications, comprising:
at least one instruction to determine an antenna weight vector (AWV);
at least one instruction to storing a spherical zoning map in a memory;
at least one instruction to control a plurality of antennas of a phased antenna array; and
at least one instruction to control, by a beam controller, a transceiver operatively coupled to the phased antenna array by setting the AWV for each antenna of the plurality of antennas.Cited by (0)
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